[jira] [Commented] (HDDS-2449) Delete block command should use a thread pool

["mingchao zhao (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDDS-2449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17650529#comment-17650529 ] 

mingchao zhao commented on HDDS-2449:
-------------------------------------

Ozone 1.3.0 had been released and we currently have more than 600 open issues targeted for 1.3.0. I am moving the target field to 1.4.0.

If there is anything needs to be discussed about the Target Version, Please reach out to me via Apache email or Slack.

> Delete block command should use a thread pool
> ---------------------------------------------
>
>                 Key: HDDS-2449
>                 URL: https://issues.apache.org/jira/browse/HDDS-2449
>             Project: Apache Ozone
>          Issue Type: Improvement
>          Components: Ozone Datanode
>    Affects Versions: 1.0.0
>            Reporter: Stephen O'Donnell
>            Assignee: Stephen O'Donnell
>            Priority: Major
>              Labels: TriagePending
>
> The datanode receives commands over the heartbeat and queues all commands on a single queue in StateContext.commandQueue. Inside DatanodeStateMachine a single thread is used to process this queue (started by initCommandHander thread) and it passes each command to a ‘handler’. Each command type has its own handler.
> The delete block command immediately executes the command on the thread used to process the command queue. Therefore if the delete is slow for some reason (it must access disk, so this is possible) it could cause other commands to backup.
> This should be changed to use a threadpool to queue the deleteBlock command, in a similar way to ReplicateContainerCommand.



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